This article will list common reasons for variants of the above error in the OP5 Monitor solution. Take extra note of the specific file listed in the error message.
If you are getting the following error pertaining to Nagvis when trying to access your maps:
The requested URL /nagvisls/frontend/nagvis-js/index.php was not found on this server."
This may be caused by an out of date
nagvis.ini.php file. See if you have an
.rpmnew file, and if so, use that instead:
# mv /opt/monitor/op5/nagvis_ls/etc/nagvis.ini.php /opt/monitor/op5/nagvis_ls/etc/nagvis.ini.php.bak
# mv /opt/monitor/op5/nagvis_ls/etc/nagvis.ini.php.rpmnew /opt/monitor/op5/nagvis_ls/etc/nagvis.ini.php